Geothermal Reservoir Characterization & Analysis
Build 3D geothermal reservoir models from subsurface data to optimize production and well placement
What You Can Do
You can synthesize well logs, core analysis, production tests, temperature surveys, and seismic data into comprehensive 3D reservoir models that predict sustainable flow rates and thermal performance. This skill helps you evaluate reservoir volume, permeability distribution, thermal boundaries, and fluid circulation patterns to make confident decisions on well placement, injection strategies, and long-term field management. You'll reduce exploration risk and generate reserve estimates backed by integrated subsurface analysis.
Features
well logs, core samples, production tests, temperature surveys, and seismic data into unified reservoir models
map spatial variations in rock properties and identify high-flow zones for optimal well targeting
define reservoir extent, identify heat sources, and project thermal depletion over production timescales
trace heat and mass transport to predict production sustainability and recharge potential
use interference testing and pressure buildup analysis to estimate reserves and safe production limits
model pressure maintenance and thermal management to extend field life and protect resources
rank geothermal opportunities by reservoir quality, production potential, and development risk
prepare regulatory and financing reports with defensible subsurface characterization
Example Output
Example 1: Prospect Evaluation Report
- Reservoir volume: 2.5 km³ (assessed from well spacing and seismic horizons)
- Temperature gradient: 75°C/km (inferred from geothermal surveys)
- Estimated permeability: 50–200 mD in primary fracture zones
- Sustainable production rate: 40–60 kg/s at 180°C (calculated from interference tests)
- Risk assessment: Moderate—hydrothermal alteration reduces secondary porosity; recommend pressure maintenance via injection
Example 2: Well Placement Optimization
- Proposed production well: 2,400 m depth at N35°E orientation, targeting 1.8 km² fracture zone identified in 3D seismic
- Injection well: 2.6 km offset to maintain 5 bar minimum pressure differential
- Predicted thermal drawdown: <2°C/year under proposed 50 kg/s extraction rate
- Expected lifespan: 30+ years without significant reinjection
Example 3: Thermal Depletion Analysis
- Current reservoir temperature: 210°C at 2,500 m depth
- Historical decline rate: 0.8°C/year (first 8 years of production)
- Projection with full injection: 0.15°C/year (95% recovery of heat)
- Recommendation: Increase reinjection to 35 kg/s to stabilize thermal output
What's Included
- SKILL.md: Complete instruction file with structured workflows for data integration, thermal analysis, and reserve estimation
- Reservoir Characterization Worksheet: Template for compiling well logs, core data, production tests, and thermal surveys into a unified data matrix
- Permeability Assessment Framework: Step-by-step methodology for analyzing core samples, pressure transient tests, and spinner logs to map permeability distribution
- Thermal Boundary Definition Checklist: Systematic approach to identifying heat sources, surface heat loss, and thermal limits using temperature profiles and geochemistry
- Well Placement Optimization Matrix: Decision tool for ranking candidate well locations based on reservoir quality, thermal stability, and operational constraints
- Reserve Documentation Template: Regulatory-compliant format for presenting subsurface characterization, production forecasts, and sustainability assessments
Who It's For
- Geothermal reservoir engineers designing exploration and development strategies
- Hydrogeologists evaluating subsurface fluid flow and thermal transport in geothermal systems
- Petrophysicists analyzing core samples and well logs to assess formation quality
- Field managers optimizing well placement and injection schedules for active geothermal operations
- Energy company portfolio managers comparing geothermal prospects for investment decisions
Best For
- Synthesizing multi-source subsurface data into coherent 3D reservoir models
- Calculating sustainable production rates and long-term reserve estimates
- Designing injection strategies to maintain pressure and thermal performance
- Evaluating thermal boundaries and identifying heat depletion risks
- Preparing technical documentation for regulatory compliance and project financing
- Prioritizing geothermal prospects based on reservoir quality and development risk
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